I submitted the same Java code 3 times. Compiled ok only on the third time since I poked around a bit and found I have to call my class "Solution" in order to pass compilation! The guy in the live chat said he'll change my # of submissions to 1 instead of 3, since the challenge didn't say that the class be called "Solution". Hasn't done so yet. My score is 52.5 when it should really be 57.5. Hopefully they fix that. Am on to my next challenge.